Gearing for tractors



J. B. FOOTE AND G. T. STRITE.

GEARING FOR TRACTORS.

APPucATloN FILED Aus.26. |918.

m *m I I. B. FOOTE AND`G. T. STRITE.

GEARING FOR TRACTORS.

APPLICATION FILED AUG.26. |918.

@3.1151115611 June 27, 1922-.

2 SHEETS-SHEET 2.

U71 7T/Mv MIIIIIIII i county ofI v10 ing is a UNITED STATES PATENT oFFl-CE.

-TOHN B. FOOTE, OF OAKPARK, ILLINOIS, AND GEORGE T. STRITE, OF MINNEAPOLIS,

MINNESOTA, ASSIGNORS TO FOOTE BROS. GEAR &

NOIS, A CORPORATION 0F ILLINOIS.

MACHINE CO., 0F CHICAGO, ILLI- GEARING For. TRACTORS.

Specification of Letters Patent.

Patented June 27, 1922.

Original application led September 28, 1916, Serial No. 122,594. Divided and this application filed Y August 26, 1918. Serial No. 251,442.

T 0 allwhom t may concern.

Be it known that we,vJoHN B. FooTE Aand GEORGE T. STRITE, citizens of the United States, and residents of Oak Park, in the Cook and State of Illinois, and Minneapolis, in the .county of Hennepin, State of Minnesota, respectively, have invented new and useful Improvements in Gearing .for Tractors, of which the followfull, clear, and exact' description. The invention relates to transmission gearing for tractors and more particularly i to means for lubricating the bearings.

The present application contains matter 15 which is a division of that set forth in an application lfiled by us September 28, 1916, Serial No. 122,594. K

The object of the invention is. to provide improved means for lubricating the bearings 20 in the differential transmission gearmg to keep the bearings properly lubricated.

A further object of the invention is to provide improved means for vsupplying lubrication of a series of gearJ wheels in the transmission gearing.

The invention consists in the several novel features hereinafter set forth and more particularly defined by claims at the conclusion hereof.

In the drawings: Fig. 1 is a vertical transverse section through the differential gearing lembodying the invention. Fig. 2 is an inner end view of one ofthe sleeves for the' differential shafts. Fig. 3 is a plan of the same.' Fig. 4 is a vertical longitudinal section and Fig. 5 is'a horizontal section, parts being shown in elevation.

The variable speed gearing and the differential gearing are enclosed within the case a which is adapted to retain .lubricant for `the gearing. A drive shaft b 1s mounted in and near one end of the case and the differential gearing c is mounted in and near the other end of the case. lThe end of the case a, containing the differential gearing, is supported by sleeves'15' and 16, each provided with a flange or head 17 which is secured in a recess 19'at one side of the case by bolts 18. At its inner end, each of the sleeves is provided with a bearing 20 and at its outer end with a roller bearin 21, the outer ends of these sleeves are sultably secured tov or on the supporting frame of the tractor in any suitable manner.

A' Driven shafts o are mounted in sleeves 15 and 16 respectively and the outer end of each of these shafts has a pinion 24 fixed thereto to drive a gear on one of the traction wheels. The differential gear c for the driven shafts c comprises a drum 25 formed with an integral flange 26 for attachment of a gear ring 27 by which the differential gearing will be driven. Drum 25 comprises flanged sides 28, each of which has a hub 29 journalled in one of the bearings 20 on the sleeves 15, 16. The members of the drum 25 are secured together byibolts 30. Arbors 31 are mounted in drum 25 and a ring 32.

lBevelled pinions 33 on arbors 31 mesh with the bevelled gears 02 on shaft 0 respectively. The rear portion of the case is provided with an opening a. through which the gear ring 27 and other parts may be ,placed into and removed from the case. This o ening is normally closed by a cover am. aF formed in the vsides of the case a are of sufficient diameter to permit the drum to be inserted laterally into the case.

Drive shaft b is journalled in a bearing 35 carried in a head-37` which is removably secured to one side of the case and a bearing- 36 which is carried by a head 38 which is removably secured to the other side of the case. This shaft extends laterally to one side of the` ear-case, as at b', and is rovided g P with a service pulley for driving any mechanism other than the traction wheels of the tractor. A- motor driven shaft 41 is mounted in a suitable bearing 42 in one end of the case a. Bevelled pinion 46 on shaft 41 meshes with a bevelled gear 47 which is fixed to the drive shaft b to impart movement to the shaft b. A high speed pinion `49 anda low speed pinion 5() are slidably mounted and separately movable on the shaft b, being connected thereto by a key 51 in such manner as to cause both pinions to be driven in all positions on the shaft. Intermediate gears 52 and 53 mounted on a, stud shaft 54 in case aare adapted to -drive the differential gearing from the pinions on the shaft. b. High speed pinion 49 is movpenlngs able laterally on the shaft b into engagement with the gear`52 and low speed pinion This lubricant will also sleeves.

` wall 93 to keep the restrlcted to the details 50 is movableinto and out of engagement with gear 53. Gear 52 meshes constantly with the gear ring 27 which is fixed to the gear drum 25. Any suitable controlling mechanism may be used, and for a specific exemplication of such, reference may be had to our aforesaid application Serial No. 122,594.

The case a is adapted to contain lubricant so that the lower portion of the gearing will run in oil, and cross-walls a7 and 0&8 are formed on `the bottom of case a; to hold-lu-kbricant where the intermediate gears will dip into it and so that the lubricant will also be splashed on the gears on shaft b. A dra-in plug a is provided in the bottom of the case a. i

The lower portion of the gear ring 27 travels in the lubricantheld in the lower portion or compartment of the case a and this causes the lubricant to be splashed into the upper portion of the chamber in the rear end of the case a. A pocket 90 is formed above each bearing 20 to catch the lubricant which is splashed into it and to conduct it through a hole 91 into the outer portion of one of the housing sleeves 15, 16, so that it will drip onto one of the driven shafts cso that some ofthe lubricant will be carried outwardly by the shaft to its bearing 21. accumulate in the A cross-wall 98 is formed in each housing sleeve adjacent the outer end of its bearing 20. The vibration and tilting of the tractor will cause some of the lubricant to be retained in -the pocket 92 formed by the bearing 20 for the differential drum and the bearing surfaces between the lgears c2 and the sides of the drum well lubricated.

`The invention is not to be understood as .set forth, since these may be modified within the scope of the appended claims, without departing from the spirit and scope of the invention. Having thus described the invention, what we claimas new and desire to secure by Let- Aters Patent, is: 1. In-variable speed transmission gearing for tractors, the combination of a case, sleeves on the sides of the case, differential gearing comprising shafts extending through said sleeves, and bearings in the sleeves for the differential gearing,`- the case being provided with elevated pockets for catching lubricant splashed by the gearing and with means for conducting lubricant from the pockets into the inner ends of the sleeves.

2. In variable speed transmission gearing provided with for tractors, the combination of a case, differential gearing comprising shafts in the case, bearings in the case for the differential gearing, and sleeves on the sides of the case for said differential shafts, the'case being elevated pockets integrally formed -thereon for catching lubricant splashed by t-he differential gearing any] with means for conducting lubricant from.

the pockets into the-ninner ends of the sleeves.

'3, In variable speedtransmission gearing lfor tractors, the combination of a case, differential gearing comprising shafts in the case,y a drive-shaft in the case, variable speed gearing between said shaft and the differential gearing, and bearings inthe case for the differential gearing, sleeves on the sides bf the case for said differential shafts, thecase being provided with' elevatedfpockets for catching lubricant splashedby the differential gearing and with means for conducting lubricant from the pockets into lthe sleeves.

4. `In variable speed transmission gearing for tractors, the combination of a case, ditferential gearing comprising shafts in the case, bearlngs in the case for the differential gearing,`and sleeves on the sides of the case for said differential shafts, the case being provided with means for conducting lubricant fromv the case to y being provided with walls for holding lubricant in the bearings.

the sleeves, the latterk 5. In variable speed transmission gearing Y for tractors, the combination of a case, differential gearing comprising shafts in the case, bearings inthe case for the differential gearing, andA sleeves on the sides of the case for said differential shafts, the case being provided with elevated pockets on the sleeves for catching lubricant splashedby the differential gearing, bricant from the latter being provided withV walls for holding lubricant in the bearings 6.v In variable speed transmission for tractors, the combination of a case, differential gearing comprising shafts in the case, and sleeves on the sides of the case for said differential shatsghaving bearings therein for the differential gearing, the sleeve having elevated ocket integrally formed on their inner aces for` catching lubricant splashed by the differential gearing ducts therein for conducting lubricant from the pockets into the sleeves and integral walls for holding lubricant in the bearings.

JOHN B. FOOTE. GEORGE T. STB/ITE.

means for'conducting lugearing pockets tothe sleeves, the 

